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E. KROST. Apparatus yfor Making Ice.

Patented Nov. 20, 1877.

WITNBSSES.

yfymo @x9/ L5-W Bf 276. Wi my@ AT1-marier.

N.FETERS. PHOTO-LITHOGRAFHER. WASHINGTUN. D C.

i the inner box or congealer, .the latter surround- Specification forming part of Letters @wasserfest 2 M PROVIEgM-ENM APPARATUS F ORS-MAW Nie fro-E; l

ratent No. 197,223, dated November 20, 1 877 5 application iiled April 5, 1877.

'To all whom it may concern.'-

Be it known that L'Enennn Knosr, a resiyfdent of the city of New Orleans, parishV of Orleans, andState of Louisiana, have invented \'"'a"certain new and useful Improvement in Prc cess and Apparatus for Making Ice 5v and I- do hereby declareV the following to be a full, clear, and correct description of the same, reference beinghad tothe annexed drawing, making a part of this specification.

lIhis-"inventio'n'relates tothe artiiicial production of a superior quality of ice, either in large o r small blocks, by the combined iniluencesfof the l'expansion of a liquefied gas and vacuum, the latter created by any suitable vacuum apparatus, and aided or completed by the employment of sulphuric acid, whichhastens i the freezing of water by absorbing` its vapors as fast as 4they arise..

y The nature of my invention will be Vbetter understoodby referring to the accompanying .xdrawings, in which- Figure l representsa side elevation yof vmy apparatus, the outer casings of which are shown in section. Fig. 2 is a vertical longitudinal section of the above; and Fig.Y 3, a horizontal section of the interior boxor congealer A,

v which is constructed of metal plates A', the

flanged edges of which are bolted together, as

` l Vat b, and strengthened on their outer sides with -ribs c;

The congealer is provided with va domeshaped covenD, to the lower interior portion of' whichis secured, byscrews or detachable 1 fastenings, a grating, E, on which is supported a shallow dish, F,' 'that is designed to contain sulphuric acid, the same being -fed thereto s through a valve,vG, and pipe h, conneoted withv the dome, as shown. l Y

I is-a metal-casing in which is supported s y ed by a coil of pipe, j, the inletand exit of which are indicated by arrow-points 1 2.f rIbis *coil is submerged by filling the space between `the above-mentioned casing and congealer,

through a pipe, k,`with a solution of brine or in a wooden box, M, and the space n between the 'two iilled in with sawdust, charcoal, or any other suitable non-conducting material.

Water to be converted into ice is supplied to the congealer through a pipe O, the lower end of which is carried below the grating E, and Y provided with numerous small holes, through which it is sprayed in all, directions.

The dome D is' furnished with eyebolts R R', for convenience in raising the same, and with eyeglasses or side lights S S', forobtaining' a view of the interior of the con gealer, and thereby a correct knowledge of the progress made in freezing.

Before the operation of freezingis begun a number of iron anchors or drawibars, t, are

inner sides of the congealer.foryfacilitating the removal of the ice when formed.

The operation of my invention is as follows: The compartment in which the lcoil is placed is first iilled .with a solution, as before stated, of brine or chloride of calcium, when the vacuum apparatus is put in operation, and the air withdrawn from the congealer through the pipe V. About the same time the gas is admitted to the coil j, after which the water is fed to the congealer through a valve, o', and spray-pipe o. ating a vacuum has ceased orlnearly' ceased to operate, the sulphuric acid is introduced through its conduit into the dish F, Aso as to hasten the freezing by absorbing Y the vapors as l` fast as they arise.

In order to remove the ice, after .the block has been formed, as above described, the solu- "tion is withdrawn from the compartment n',

and steam introduced in lieu thereof, so as to free the ice by melting that portion which is in contact with the congealer. The cover of the apparatus is next removed, and the ice raised out of the congealer by means of hooks inserted in the eyes of the anchor-bars tn Having described my invention, whatI claim as new, and desire to secure by Letters Patent, is-

l. In an ice-machine, the combination, with a closed congealer, of exhaustingmechanism,

'and a vessel for containing anabsorbent of When the apparatus for cremoisture, the latter being situated withinthe congealer, substantially as described. l

v2.'111 combination with thecongealer A, the

spray-pipe O and pan F, substantially as described.

3. The combination, with the congealer A,

of the pipes h, O, and V, for introducing water and acid, and for the Withdrawal of air, substantially as described.

4. rEhe congealer A, surrounded by coil j` and casing I, ancprovidea with a' cover, p,

in `which is suspended,"ebylfgrating, 2E, or 4 other` suitable 'means,adi sh, F, as described, and for the purpose set forth.

In testimony whereof I have hereunto set my hand.

o ,A i i, KROST. v In presence of- J. C. HUBBELL, T. F. DE GOPPELQI :if 

